Combination-spring-tool holder.



IVI. SCHONBRUNN. COMBINATION SPRING TOOL HOLDER.

APPLICATION FILED JUNE 2l, 19417.

Patented Jan. 1, 1918.

W/ T/VESSES MW CW .M

COMBINATION-SPRING-TOOL HOLDER.

T0 all whom t may concern Be it known that I, MAX SGHONBRUNN, a subject of the King of I-Iungary, first naturalization papers obtained, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Combination-SpringeTool Holder', of which the following is a full, clear, and exact description.

This invention relates to lathe tool holders, and more particularly to a combination spring tool, and the invention has for its general objects to improve the construction and operation of devices of this character so as to be reliable and eflicient in use, comparatively inexpensive to manufacture, and so designed as to permit of a large variety of operations with only one holder and interchangeable cutter or tool-carrying posts.

A more specific object of the invention is the provision of a lathe tool holder which'is provided with an offset shank formed with a vertical opening in which is removably or reversibly clamped a vertical spring post which carries the cutter.

With such objects in view, and vothers which will appear as the description proceeds, the invention comprises various novel features of construction and arrangement of parts which will be set forth with particularity in the following description and claim appended hereto.

' In the accompanying drawing, which illustrates certain embodiments of the invention and wherein similar characters of reference indicate corresponding parts in all the views,

Figure l is a side'view of the combination tool, with portions in section to illustrate the details of construction;

Fig. 2 is a horizontal section on the line 2 2, Fig. 1;

Fig. 3 is a side view showing a different form of post;

Fig. 4 is a detail view showing a post with another form of cutter;

Fig. 5 is a (plan view of the cutter shown in Fig. 4; an

Specification of Letters Patent.

Fig. 6 is "a view showing a thinner post held by a split bushing in the holder. l

Referring to the drawing, A designates the holder and B the cutter-carrying post. The holder A is formed with a body or shank 1 from which rises at one end aninclined neck 2 that terminates in a vforwardly projecting horizontal head 3. This head is provided with a vertical opening 4, in which Patented Jan. 1, 1918. l

Application filed June 21, 1917. Serial No. 176,071. f

the post B is disposed, such post being adjustable vertically or rotatably in the head 3, inwhich it is held by a clamping bolt 5 disposed in -a transverse opening 6. This bolt has a notch 7 of the same radius as the opening 4, so that the lnotch can receive the post B. The post B may have provision at each end for holding cutters or tools 8 and 9, as shown in Figs. l and 4, and is reversibly mounted. The post B in Fig. 3 is a modification adapted for holding other kinds of cutters, yand in both instances the posts can be adjusted to produce the desired spring effect. If more resiliency is required a post B2 of smaller diameter maybe employed, and in this case a split bushing 10 is inserted vin the passage 4, so as to tightly clamp vthe post B2 in the head 3.V Obviously, other cutters than those shown may be employed, and a variety of posts may be designed for special cutters, but only a single holder'will suliice. Y

From the foregoing description taken in connection with the accompanying drawing, the advantages of the construction and method of operation will be readily understood by those skilled in the invention appertains, and while I have described the principle of operation together with the device which I now con- Sider to be the best embodiment thereof, I desire to have it understood that the device shown is merely illustrative and that such the art to which changes may be made when desired as fall bar=like shank having an upwardly for Wardly inclined neck integral With one end the form of a single-piece resilient rod of the shank, and a head on the neck extendclamped in the said passage of the head and ing horizontally therefrom in a direction having means for supporting a Vcutter' in line away from the shank and located Wholly with the shank While the portion of the post 'above the latter, there being a passagerin the between the kcutter vand the head `is 'free to head at right-angles to theV length of theY swing. Y shank, and a Spring cutter-carrying post in Y MAX SCHONBRUNN.

Copies of this patent may be obtained for five cents each, by addressing the llommissiozner of Patents,

' Washington, D. C. i 

